Blazer 4WD V6-4.3L VIN X (2005)
2. Align white paint mark on the bottom stem of the distributor, and the pre-drilled indent hole in the bottom of the gear (3).
3. Installing the driven gear 180 degrees out of alignment, or locating the rotor in the wrong holes, will cause a no-start condition. Premature engine
wear or damage may result.
NOTE: The ignition system distributor driven gear and rotor may be installed in multiple positions. In order to avoid mistakes, mark the distributor
on the following components in order to ensure the same mounting position upon reassembly:
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The distributor driven gear
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The distributor shaft
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The rotor holes
With the gear in this position, the rotor segment should be positioned as shown for a V6 engine (1) or V8 engine (2).
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The alignment will not be exact.
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If the driven gear is installed incorrectly, the dimple will be approximately 180 degrees opposite of the rotor segment when the gear is
installed in the distributor.
4. Using a long screw driver, align the oil pump drive shaft to the drive tab of the distributor.
5. Guide the distributor into the engine. Ensure that the spark plug towers are perpendicular to the centerline of the engine.
6. Once the distributor is fully seated, the rotor segment should be aligned with the pointer cast into the distributor base.
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There may be a 6 cast into this pointer, indicating that the distributor is to be used on a 6 cylinder engine or an 8, indicating that the distributor
is to be used on a 8 cylinder engine.
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If the rotor segment does not come within a few degrees of the pointer, the gear mesh between the distributor and the camshaft may be off a
tooth or more.
